Based on what you have learned about monopoly markets and markets in oligopoly, which of these two do you believe is more harmful for the consumers and for the economy, and why?

Do you believe all monopolies should be considered illegal? (Please use your knowledge about the Sherman Anti-Trust Act, etc., to discuss the issue).

Many goods and services, such as homeland security, air traffic control, national highways construction, disaster relief, etc., are exclusively provided by the government. In that sense, they are government produced, government run monopolies.

If that is fair, then how can the government use antitrust laws to strike down private monopolies? Are all private monopolies necessarily evil, and should they never be allowed to exist?

Are government provided goods/services public goods? Please explain how or why, with the help of an example.